and i have two errors :
/opt/dmd/bin/../src/phobos/std/algorithm.d(393): variable
std.algorithm.getPivot!(compFn).getPivot!(int*).getPivot.r final cannot be
applied to variable
/opt/dmd/bin/../src/phobos/std/algorithm.d(404): template instance
std.algorithm.getPivot!(compFn).getPivot!(int*) error instantiating

Edit std/algorithm.d and remove the 'final' keyword. (This will be done
in the next update.)